System and method for bookmarking and auto-tagging a content item based on file type

ABSTRACT

The present invention is directed towards systems and methods for bookmarking and tagging content items such as media files with user-defined tag information and system-defined tag information based on file types. Utilizing tag information, a user of a bookmarking and tagging service provider can easily search for and retrieve links to media files having specific tag information, even if the media files are located at geographically disparate sites. A user may also retrieve the media files using web feeds.

COPYRIGHT NOTICE

A portion of the disclosure of this patent document contains materialthat is subject to copyright protection. The copyright owner has noobjection to the facsimile reproduction by anyone of the patent documentor the patent disclosure, as it appears in the Patent and TrademarkOffice patent files or records, but otherwise reserves all copyrightrights whatsoever.

TECHNICAL FIELD

The present invention generally relates to electronic bookmarking. Morespecifically, embodiments of the present invention may provide methodsand systems for saving references to content items along with taginformation. Embodiments of the present invention may provide methodsand systems for automatically adding tag information to references tocontent items based on the file types of the content items, and forsearching and retrieving references to content items based on taginformation. Embodiments of the present invention may provide methodsand systems for generating and updating feeds based on one or morereferences to content items, as well as downloading the content itemsincluded as enclosures in feeds.

BACKGROUND

A number of techniques are known to those of skill in the art for savingreferences to content items. One example is a bookmark control availableby most popular web browsers. A user utilizes a web browser to viewcontent items, including content items available over a network, such asthe Internet. When the user navigates to a content item to which he orshe wishes to save a reference, the user utilizes a bookmark controlfrom the web browser to save a reference to the content item. Forexample, where a given content item is identified by an address, such asa URL, the browser saves a local reference to the content item thatincludes the address of the content item. When the user subsequentlywishes to view the content item, the user may select the locally savedreference to the content item, which causes the browser to retrieve thecontent item that the address identifies.

In some cases, a user may wish to organize references to content itemsby grouping together references to like content items. For example, auser may wish to group references to media files, such as video files. Auser may wish to associate personally meaningful descriptors withvarious video files. One example of a technique for grouping referencesis to utilize a bookmark control in a browser to group bookmarksaccording to personally meaningful descriptors, such as organizingbookmarks into various folders. For example, a user may create a folderof bookmarks with the name “funny videos” and use it to store referencesto video files that the user deems funny. In some cases, a user may wishto search for specific types of content items matching certain criteria.For example, a user may wish to search for “funny videos.” A user mayuse an algorithmic search engine to search for funny videos at one ormore disparate sites. However, algorithmic search engines may not haveany way of determining whether specific video files are in fact funny.

A number of techniques are known to those of skill in the art for savingreferences to content items and in particular to content items withupdated content drawn from multiple disparate sources. One example isusing web feeds. Web feeds may be used to share the most recentheadlines or latest entries in a blog, the full text of news articlesand blog entries, and even media files such as audio clips and videoclips. Media files may be added to web feeds as enclosures to the feed.Various news-reporting agencies now use web feeds and allow other websites to republish their “syndicated” content (e.g., headline orheadline plus short summary) feeds. Users of such news web feeds areable to have news “fed” to them, instead of searching for updatedcontent.

There are a number of shortcomings associated with presently knowntechniques for saving references to content items. One shortcoming isthat references to content items are saved locally on a workstation of agiven user and are not available to the user when away from theworkstation. Similarly, there are currently no mechanisms that allow auser to save a reference to content item that is accessible from avariety of workstations at geographically disparate locations. Also,there are no systems and methods that allow for a user to save areference to a content item directly from a given content item orbrowser to a bookmarking and tagging service provider. Also, there areno systems and methods that allow a user to easily search for contentitems matching certain criteria, where the content items are spread outat many disparate sites. Also, there are no systems and methods thatallow a user to easily access web feeds corresponding to updated contentitems, where the content items are media files.

Thus systems and methods are needed to allow a given user to remotelysave references to content items, the references available to the givenuser from a plurality of geographically disparate workstations. Systemsand methods are further needed that allow the given user to remotelysave references to content items from within the browser, or from withina given content item, and that allow the user to easily search forcontent items with certain matching criteria where the content items arespread across a network at many disparate sites. Systems and methods arealso needed that allow the user to generate and access web feedscorresponding to updated content items, where the content items aremedia files.

SUMMARY OF THE INVENTION

The present invention provides systems and methods for bookmarking andtagging content items.

A method according to one embodiment of the present invention comprisesreceiving a command to bookmark a content item, capturingcontent-identifying information that identifies the content item,determining a file type of the content item, tagging the content itemwith tag information based on the file type of the content item, andstoring the content-identifying information and tag information. Abookmarking and tagging service provider may receive a command tobookmark a content item via a browser control or via a button control orhyperlink added to a web page by a content provider. The bookmarking andtagging service provider may capture content-identifying informationsuch as a URL of the content item. The bookmarking and tagging serviceprovider determines a file type by identifying a file extension, or bydetermining a class of media files such as audio files, video files,image files, or formatted text documents. A content item may be a MP3file, a WAV file, a MPEG file, a AVI file, a MOV file, a JPEG file, aGIF file, a PNG file, a DOC file, or a PDF file. The bookmarking andtagging service provider may tag a content item by associatingsystem-defined tag information with the content item. System-defined taginformation may be associated with a content item if the content item isan audio file, a video file, an image file, or a formatted textdocument. The bookmarking and tagging service provider may store thecontent-identifying information and tag information as a bookmark in adatabase.

A method according to one embodiment of the present invention comprisesreceiving a command to search for bookmarked content items havingspecific tag information associated with the content items, querying adatabase of bookmarked content items for bookmarks having the specifictag information, and retrieving the bookmarks. A bookmarking and taggingservice provider may receive a command to search for bookmarked contentitems when it receives tag information from a user. The bookmarking andtagging service provider may receive tag information from a user when auser navigates to a specific URL corresponding to a specific tag, when auser uses a tag navigation control on a web page, or clicks on ahyperlink associated with a specific tag. The tag information maycorrespond to a specific file type of content items, such as audiofiles, video files, image files, or formatted text documents. Abookmarking and tagging service provider may further display a list ofretrieved bookmarks along with interactive controls if the bookmarkedcontent items are media files such as audio files, video files, imagefiles, or formatted text documents. A bookmarking and tagging serviceprovider may further provide a control for generating a feedcorresponding to a web page including a set of retrieved bookmarks. Sucha control may be a button or a hyperlink on a web page to generate anRSS file or an Atom file.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is illustrated in the figures of the accompanying drawingswhich are meant to be exemplary and not limiting, in which likereferences are intended to refer to like or corresponding parts, and inwhich:

FIG. 1 is a block diagram presenting a system for bookmarking contentitems and receiving and storing bookmark information and tag informationassociated with bookmarked content items according to one embodiment ofthe present invention;

FIG. 2 is a flow diagram presenting a method for bookmarking a contentitem with tag information related to the bookmarked content itemaccording to one embodiment of the present invention;

FIG. 3 is a flow diagram presenting a method for processing a request tosearch for bookmarks based on tag information according to oneembodiment of the present invention;

FIG. 4 is a flow diagram presenting a method for processing a request tocreate a channel or feed from a set of bookmarks according to oneembodiment of the present invention;

FIG. 5 is a screen diagram presenting a user interface for searching forbookmarks using tag information and for generating a feed from a set ofretrieved bookmarks according to one embodiment of the presentinvention; and

FIG. 6 is a screen diagram presenting an example XML file correspondingto a feed generated by a bookmarking and tagging service provideraccording to one embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

In the following description of the preferred embodiment, reference ismade to the accompanying drawings that form a part hereof, and in whichis shown by way of illustration a specific embodiment in which theinvention may be practiced. It is to be understood that otherembodiments may be utilized and structural changes may be made withoutdeparting from the scope of the present invention.

FIG. 1 presents a block diagram illustrating one embodiment of a systemfor bookmarking content items and receiving and storing tag informationrelating to bookmarked content items. According to the embodiment ofFIG. 1, a bookmarking and tagging service provider 100 comprises one ormore software and hardware components to facilitate bookmarking andtagging content items available from one or more content servers 152 aand 152 b, hereinafter identified as content server 152. The contentitems may be, for example, web pages, text documents, audio files, videofiles, multimedia files, or any other form of digital content accessibleover a network.

In one embodiment, bookmarking and tagging service provider 100includes, but is not limited to, a content manager 110, a script manager120, and a bookmark and tag manager 130. The content manager 110 mayinclude a content processor 112. The script manager 120 may include anextensible markup language (XML) processor 122. The bookmark and tagmanager 130 may include a tag extractor 132. The bookmarking and taggingservice provider 100 is also communicatively coupled to one or more datastores for providing persistent storage of information for bookmarkingand tagging content items as well as providing access to stored bookmarkinformation and tag information. Such data stores may include, but arenot limited to, a bookmark and tag database 140. Bookmark and tagdatabase 140 maintains bookmarks associated with each registered user ofbookmarking and tagging service provider 100. Bookmark and tag database140 maintains the association of tag information with bookmarks, withbookmarked content items, and with bookmark information.

The bookmarking and tagging service provider 100 is also communicativelycoupled to a network 150, which may include a connection to one or morelocal and/or wide area networks, such as the Internet. The bookmarkingand tagging service provider 100 receives commands from client devices160 a, 160 b, and 160 c, hereinafter identified as client device 160,communicatively coupled to network 150. Client device 160 may be anydevice that allows for the transmission of bookmarking and taggingrequests to a bookmarking and tagging service provider 100, where thebookmarking and tagging requests may include retrieval and modificationof stored bookmark information and stored tag information. According toone embodiment of the invention, a given client device 160 may be ageneral purpose computer comprising a processor, transient andpersistent storage devices, an input/output subsystem, and a bus toprovide a communications path among components comprising the generalpurpose computer. Client device 160 also has a network interface to thenetwork 150, such as a wired or wireless Ethernet interface. Clientdevice 160 typically runs software applications (such as web browsingapplications) that allow for access to content items served by contentserver 152 and that allow transmission of bookmarking and taggingrequests, which may include allowing for the retrieval and modificationof stored bookmarks and stored tag information.

The bookmarking and tagging service provider 100 receives requests froma client device 160 to bookmark and tag content items available from acontent server 152. For example, an individual user who is using clientdevice 160 may use a web browser to navigate to a content item that acontent server 152 hosts. The user sends a request to the bookmarkingand tagging service provider 100 to bookmark the content item and to addtag information associated with the bookmarked content item. Bookmarkingand tagging service provider 100 receives and processes the request.According to one embodiment, a bookmark is associated with a givencontent item and comprises bookmark information and any associated taginformation.

Bookmark information is associated with content items, and may include,but is not limited to, content-identifying information andcontent-descriptive information regarding a given content item.Content-identifying information may include, but is not limited to, anaddress such as the universal resource locator (URL) for a content item.Content-descriptive information may include, but is not limited to,descriptive information added by a content provider such as a title to aweb page or other metadata, other descriptive information not added by acontent provider such as a filename or a file attribute, anduser-defined descriptive information. Tag information is associated witha content item, and may include, but is not limited to, user-definedinformation such as keywords or other descriptors regarding the contentitem and/or system-defined information such as keywords or otherdescriptors regarding the content item. The tag information may be basedon specific attributes of content items such as a file type. Taginformation may comprise individual words, or tags, as well as groupingsof tags.

A content manager 110 manages content items to facilitate web publishingand manages digital assets such as media files. Media files may include,for example, audio files, video files, image files, and formatted textdocuments. The content manager 110 manages content items and allows thebookmarking and tagging service provider 100 to serve web feeds. Contentmanager 110 comprises a content processor 112 that handles formattingcontent items and updating content. Content processor 112 also handlesupdating web feeds, podcasts, and other forms of syndicated content.

A bookmark and tag manager 130 associates registered users withbookmarking and tagging requests that the bookmarking and taggingservice provider 100 receives. Bookmark and tag manager 130 associatesincoming requests with bookmarks and tag information previously storedin bookmark and tag database 140. Bookmark and tag manager 130 may alsoassociate bookmarks with registered users as well as with taginformation previously stored in bookmark and tag database 140.Similarly, bookmark and tag manager 130 may also associate taginformation with registered users as well as with bookmarks previouslystored in bookmark and tag database 140.

Bookmark and tag manager 130 comprises a tag extractor 132. Tagextractor 132 extracts information about a given content item andassociates system-defined tag information with the content item based onextracted information. For example, tag extractor 132 may extractinformation about a given content item regarding a specific attribute ofthe content item, such as a file type, and then associate system-definedtags with the content item. If a given content item is a media file,such as an audio file, tag extractor 132 may determine that it is anaudio file encoded using the MPEG Layer-3 (MP3) scheme and may associatesystem-defined tag information with the content item when the contentitem is bookmarked. That is, a bookmark may contain, or have associatedwith it, system-defined tags based on the file type of the content item.

Bookmark and tag database 140 maintains bookmarks associated with eachregistered user of bookmarking and tagging service provider. Bookmarkand tag database 140 maintains the association of tag information withbookmarks 100, with bookmarked content items, and with bookmarkinformation. Bookmark and tag database 140 may be implemented, forexample, as a relational database wherein individual registered usersmay be associated with bookmark information and with tag information.The bookmark and tag database 140 may also be implemented utilizingother data storage techniques know to those of skill in the art, e.g.,an object-oriented database, a hybrid object-relational database, etc.Bookmark and tag database 140 maintains a tag space for each bookmarkedcontent item. According to one embodiment, a tag space comprises acollection of tag information associated with a given content item. Thetag space for a given content item may comprise a collection of all ofthe tag information associated with all of the bookmarks stored inbookmark and tag database 140 which are associated with the givencontent item. For example, one or more registered users may create a setof bookmarks for a given content item. Each bookmark in the set, thoughassociated with the same given content item, may be associated withdifferent tag information. The collection of all of the tag informationassociated with each bookmark in the set comprises the tag space for thegiven content item. Conversely, those of skill in the art recognize thata given tag may have an associated bookmark space on the basis ofbookmarks utilizing the given tag.

A script manager 120 is communicatively coupled with the content manager110 and the bookmark and tag manager 130. The script manager 120 mayissue commands to content manager 110 and bookmark and tag manager 130to facilitate formatting and updating content items, formatting andupdating web feeds, receiving bookmarking and tagging requests from theregistered user, as well as storing, accessing, and modifying bookmarksand tag information associated with one or more registered users. Forexample, script manager 120 may receive a bookmarking and taggingrequest when a user operating a web browser on a client device 160navigates to a content item a content server 152 is hosting. Scriptmanager 120 may receive such a request, for example, when a user clickson a hyperlink or a button added to a web page by a content provider.Script manager 120 may also receive a bookmarking and tagging request,for example, when a user clicks on a browser button or enables a browserextension.

Script manager 120 comprises an extensible markup language (XML)processor 122. The XML processor 122 communicates with the contentmanager 110 to format and update content items as well as to format andupdate web feeds. The XML processor 122 also communicates with thebookmark and tag manager 130 in order to format and update web feedsbased on retrieved bookmarks.

FIG. 2 presents a flow diagram illustrating one embodiment of a methodfor bookmarking a content item and receiving and storing tag informationrelated to the bookmarked content item. According to the method of FIG.2, a bookmarking and tagging service provider receives a command tobookmark a content item at step 210. A content item may be a web page,text document, audio file, video file, multimedia file, or any otherform of digital content accessible over a network. A script manager ofthe bookmarking and tagging service provider receives the command tobookmark a content item, for example, when a user clicks on a button ora hyperlink added to a web page by a content provider, where the buttonor hyperlink may link to an HTTP request to initiate a connection with abookmark and tagging service provider or to execute a script served bythe bookmarking and tagging service provider. Alternatively, a scriptmanager of a bookmarking and tagging service provider may receive acommand to bookmark a content item, for example, when a user clicks on abrowser button or activates a browser extension linked to an HTTPrequest to initiate a connection with a bookmark and tagging serviceprovider or to execute a script served by the bookmarking and taggingservice provider.

At step 215, the bookmarking and tagging service provider capturesbookmark information. A script manager of the bookmarking and taggingservice provider may capture bookmark information, such ascontent-identifying information. For example, the script managercaptures content-identifying information, such as the URL of the contentitem, and saves the URL in a temporary data store.

After capturing bookmark information, the bookmarking and taggingservice provider performs a check at step 220 to determine whether userinformation has been captured. User information may include, but is notlimited to, a user ID, a client device ID, a password, public key, orother identifying information. If user information has not beencaptured, the bookmarking and tagging service provider attempts tocapture the user information at step 225. A script manager of thebookmarking and tagging service provider may capture user informationaccording to a number of techniques. For example, a script manager ofthe bookmarking and tagging service provider may issue commands or runscripts to check the user's client device for a cookie, certificate, orother electronic token or file containing identifying and authenticatinginformation. Alternatively, or in conjunction with the foregoing, ascript manager of the bookmarking and tagging service provider maycapture user information via a form on a web page associated with alogin or registration procedure. Similarly, a script manager of thebookmarking and tagging service provider may capture user information byissuing commands or running scripts to access a physical token, such asthrough a card reader or a biometric device coupled to the user's clientdevice.

The bookmarking and tagging service provider performs a check at step230 to determine whether the content item is a media file. A scriptmanager of a bookmarking and tagging service provider extractsinformation, for example, by issuing commands to a bookmark and tagmanager. A tag extractor may extract information, for example, about thefile type of a content item in order to determine whether the contentitem is a media file. A media file may be, for example, an audio file, avideo file, an image file, or a formatted text document.

In one embodiment, if a tag extractor of the bookmarking and taggingservice provider determines that the content item is a media file atstep 230, then the tag extractor may tag the content item with systemtag information at step 235. Accordingly, the bookmarking and taggingservice provider associates system-defined tag information with thecontent item. For example, if the content item is an MP3 file, the tagextractor of the bookmarking and tagging service provider may tag theMP3 file with the system-defined tags “system:media:audio” and“system:filetype:mp3.”

The bookmarking and tagging service provider performs a check at step240 to determine whether the content item has been bookmarked before,either by the user or by any other registered user. A script manager ofa bookmarking and tagging service provider determines whether a contentitem has been bookmarked before, for example, by issuing commands to abookmark and tag manager. The bookmark and tag manager queries abookmark and tag database, for example, using captured bookmarkinformation and captured user information to determine whether thecontent item has been previously bookmarked. If the content item hasbeen previously bookmarked, the bookmarking and tagging service providerretrieves stored tag information at step 245.

The bookmarking and tagging service provider retrieves any previouslystored tag information associated with the content item and performs acheck at step 250 to determine whether a command to save the bookmarkhas been received. A script manager of a bookmarking and tagging serviceprovider detects a save command, for example, when a user clicks on abutton labeled “save” in order to save the bookmark. After receiving asave command, the bookmarking and tagging service provider stores thebookmark and any associated tag information, which may includeuser-defined and/or system-defined tags, at step 270. A script managerof a bookmarking and tagging service provider stores the bookmark, forexample, by issuing commands to a bookmark and tag manager. The bookmarkand tag manager stores the bookmark and associated tag information alongwith captured user information in the bookmark and tag database.

If the bookmarking and tagging service provider has not received a savecommand at step 250, a check is performed at step 260 to determinewhether tag information has been received. After receipt of any taginformation from user input at step 265, the bookmarking and taggingservice provider waits to receive a save command at step 250.

After bookmarks and tags have been stored in the bookmark and tagdatabase the bookmarking and tagging service provider may receive arequest to search for bookmarks using specific tag information, such asone or more specific tags. FIG. 3 presents a flow diagram illustratingone embodiment of a method processing a request to search for bookmarksbased on specific tag information. According to the method of FIG. 3, abookmarking and tagging service provider receives a command to searchfor bookmarks using specific tag information at step 310. A scriptmanager of the bookmark and tagging service provider may receive thecommand to search for bookmarks, for example, according to a number oftechniques, e.g., when a user enters tag information on a form on a webpage and enters a search command by clicking on a button or hyperlinklabeled “search.” The command to search for bookmarks may include taginformation, such as one or more tags to use as search criteria.

After receiving the command to search for bookmarks using the specifictag information as search criteria, the bookmarking and tagging serviceprovider performs a check at step 320 to determine whether there are anybookmarks stored in the bookmark and tag database that have associatedwith them tag information that matches the specific tag informationreceived at step 310. A script manager of the bookmarking and taggingservice provider performs this check, for example, by issuing commandsto a bookmark and tag manager to query a bookmark and tag database usingthe tag information as search criteria. If there are no previouslystored bookmarks that have matching tag information, the bookmarking andtagging service provider may suggest related tag information at step315. A script manager of the bookmarking and tagging service providermay issue commands to a bookmark and tag manager, for example, tosuggest related tag information. The bookmark and tag manager maygenerate related tag information by using heuristics to determine tagsthat are the closest matches or tags whose meanings are synonymous withthe specific tag information. After suggesting related tag information,the bookmarking and tagging service provider waits to receive a commandto search at step 310.

After determining that bookmarks stored in the bookmark and tag databasehave tag information that matches the tag information received at step310, the bookmarking and tagging service provider retrieves thebookmarks with the matching tag information at step 330.

The bookmarking and tagging service provider performs a check at step340 to determine whether any of the retrieved bookmarks and associatedtag information includes system tags. System tags may be added tobookmarks for content items that are media files. If the retrievedbookmarks are associated with content items that are media files suchthat the bookmarks have system-defined tag information, then thebookmarking and tagging service provider performs a check at step 343 todetermine whether a media player or viewer is available to the user. Ascript manager of the bookmarking and tagging service provider may checkthe capabilities of the user's client device, or it may provide anappropriate player or viewer control to the user. If an appropriatemedia player or viewer is available at step 343, the bookmarking andtagging service provider adds interactive controls to the retrievedbookmarks at step 347. Interactive controls may include, for example,controls to allow a user to play, pause, or stop playing an audio orvideo file. Interactive controls may also include, for example, controlsto allow a user to view images or formatted text documents. A scriptmanager of the bookmarking and tagging service provider may addinteractive controls, for example, by associating interactive controlswith retrieved bookmarks for later display on a web page.

The bookmarking and tagging service provider filters and sorts thebookmarks at step 350. A script manager of the bookmarking and taggingservice provider may filter and sort the bookmarks, for example, byissuing commands to a bookmark and tag manager. Alternatively, a scriptmanager may run scripts to filter and sort the bookmarks. Because theretrieved bookmarks may be too numerous to display at once, the scriptmanager may filter and sort the bookmarks according to various criteria.Such filtering and sorting criteria may involve, for example, the dateand time that a bookmark was added to the bookmark and tag database, thepopularity of a bookmarked content item (e.g., as manifested in thenumber of users who have bookmarked the content item), the userassociated with each bookmark, etc.

The bookmarking and tagging service provider generates formatted outputand displays it to the user at step 360. A script manager of thebookmarking and tagging service provider may generate formatted output,for example, by issuing commands or running scripts to generate a webpage that includes a listing of retrieved bookmarks and interactivecontrols for bookmarked content items. The web page may further includeadditional controls to allow a user to filter and sort the retrievedbookmarks based on other or additional criteria. The additional controlsmay allow a user to filter and sort retrieved bookmarks to display themost recent bookmarks, the most popular bookmarks, the user's ownbookmarks, a specific number of bookmarks, etc. The web page may furtherinclude a tag navigation control (to allow a user to search forbookmarks using different tag information as search criteria) and a feedcontrol (such as a button control to allow a user to send a command togenerate a feed based on the web page including retrieved bookmarks).

FIG. 4 presents a flow diagram illustrating one embodiment of a methodfor processing a request to create a channel or web feed from a set ofbookmarks. According to FIG. 4, a bookmarking and tagging serviceprovider receives a command to generate a feed at step 410. A scriptmanager of the bookmark and tagging service provider may receive thecommand to generate a feed, for example, when a user clicks on a buttonor a hyperlink added to a web page by a content provider, where thebutton or hyperlink may link to an HTTP request to initiate a connectionwith a bookmark and tagging service provider or to execute a scriptserved by the bookmarking and tagging service provider. Alternatively, ascript manager of the bookmarking and tagging service provider mayreceive a command to generate a feed when a user clicks on a browserbutton or activates a browser extension linked to an HTTP request toinitiate a connection with a bookmark and tagging service provider or toexecute a script served by the bookmarking and tagging service provider.

After receiving the command to generate a feed, the bookmarking andtagging service provider performs a check at step 420 to determinewhether the feed exists. A script manager of the bookmarking and taggingservice provider may perform the check by issuing commands to a contentmanager. If the feed exists, then the bookmarking and tagging serviceprovider updates the feed and aggregates the content. At step 425, ascript manager may issue commands to a content manager to update contentin a feed by appending references to content items and appending part orall of a content item itself to the feed.

For each bookmarked content item referenced by the set of bookmarks thatwill form the basis of the feed, the bookmarking and tagging serviceprovider performs a check at step 430 to determine whether a bookmarkedcontent item is a media file. A script manager of the bookmarking andtagging service provider may perform the check, for example, by issuingcommands to a content manager to determine whether a content item is amedia file. The bookmarking and tagging service provider may utilize atag extractor to extract information regarding the file type of acontent item in order to determine whether the content item is a mediafile. If a content item is a media file, the bookmarking and taggingservice provider may create an enclosure for the media file in the feed.A script manager may issue commands to a content manager to createenclosures.

The bookmarking and tagging service provider assembles the feed at step440. A script manager of the bookmarking and tagging service providermay assemble the feed by running scripts or issuing commands to an XMLprocessor. The XML processor may assemble an XML file that may be readby an RSS-enabled application, or an XML file that may be read by anAtom-enabled application. The feed may comprise, for example, an RSSdescription and various items. The RSS description may include, forexample, RSS version information, a channel title or feed title, achannel link or feed link, and a channel description or feeddescription. Each item may include an item title, an item link, and itemdescription, and an enclosure URL. The item title may be a file name orother title for the content item, while the item link information may bean address such as a URL. The item description may be a user-defineddescription of the content item, or a content provider or content serverserving the content item may provide a description. The item enclosureURL provides a link to the content item and indicates that the contentitem is a media file. Because the link is encapsulated within the<enclosure> tag of the XML file, an RSS reader or aggregator candownload the content item as part of the feed.

After assembling the feed, the bookmarking and tagging service providerpresents the user with controls to download or subscribe to the feed atstep 450. A script manager of the bookmarking and tagging serviceprovider may display a web page containing XML code corresponding to thefeed and may provide a feed control, such as a button control, to allowthe user to download the feed to the user's client device.

FIG. 5 presents a screen diagram illustrating a user interface forsearching for bookmarks using tag information and for generating a feedfrom a set of retrieved bookmarks according to one embodiment of thepresent invention. According to FIG. 5, a web browser window 500comprises an address bar 510 and a web page 520. The address bar 510contains an address 512. The web page 520 further comprises a tagnavigation control 530, retrieved bookmarks 540, interactive controls550 a and 550 b, and a feed control 560. The tag navigation control 530allows a user to enter specific tag information, such as tag 532. When auser of a bookmarking and tagging service provider searches forbookmarks based on specific tag information, the user may enter taginformation by navigating to a particular web page by entering anaddress 512 in the address bar 510. The user may alternatively utilizethe tag navigation control 530 to enter specific tag information, suchas tag 532.

When a user searches for bookmarks based on tag information, thebookmarking and tagging service provider displays a list of retrievedbookmarks 540 on the web page 520, where the retrieved bookmarks 540have associated tag information matching the tag information the userprovides. In the exemplary embodiment of FIG. 5, the specific tag 532 isa system tag for audio files encoded using the MP3 file format.Accordingly, the retrieved bookmarks 540 all correspond to content itemsthat are MP3 files. For retrieved bookmarks whose associated contentitems are media files, interactive controls 550 a and 550 b, forexample, may be displayed. Interactive control 550 a is a stop controlthat allows a user to stop playing a bookmarked content item that is anaudio file. Interactive control 550 b is a play control that allows auser to play a bookmarked content item that is an audio file. Feedcontrol 560 allows a user to send a command to generate a feed for theweb page 520 which is a feed based on a set of retrieved bookmarks.

FIG. 6 presents a screen diagram illustrating an example XML filecorresponding to a feed generated by a bookmarking and tagging serviceprovider according to one embodiment of the present invention. Accordingto FIG. 6, a web browser window 600 comprises an address bar 610 and aweb page 620. The address bar 610 contains an address 612. The web page620 further contains an XML file having feed description 630 and items640 a and 640 b. Feed description 630 comprises RSS version information632, channel title information 634, channel link information 636, andchannel description information 638. An item 640 b comprises item titleinformation 642, item link information 644, item description information646, and item enclosure information 648. When a user sends a command togenerate a feed based on a set of retrieved bookmarks, a bookmarking andtagging service provider generates an XML file and may display it as aweb page 620 to the user. The bookmarking and tagging service providermay allow the user to download the displayed XML file to the user'sclient device.

While the invention has been described and illustrated in connectionwith preferred embodiments, many variations and modifications as will beevident to those skilled in this art may be made without departing fromthe spirit and scope of the invention, and the invention is thus not tobe limited to the precise details of methodology or construction setforth above as such variations and modification are intended to beincluded within the scope of the invention.

1. A method comprising: receiving a command to bookmark a content item;capturing content-identifying information that identifies the contentitem; determining a file type of the content item; tagging the contentitem with tag information based on the file type of the content item;and storing the content-identifying information and tag information. 2.The method of claim 1, wherein receiving a command to bookmark a contentitem comprises receiving a command via a browser control.
 3. The methodof claim 1, wherein receiving a command to bookmark a content itemcomprises receiving a command via a button control or hyperlink added toa web page by a content provider.
 4. The method of claim 1, whereincapturing content-identifying information comprises capturing a URL ofthe content item.
 5. The method of claim 1, wherein determining a filetype comprises identifying a file extension.
 6. The method of claim 1,wherein determining a file type comprises determining that a contentitem is an audio file, a video file, an image file, or a formatted textdocument.
 7. The method of claim 6, wherein determining a file typecomprising determining that a content item is a MP3 file, a WAV file, aMPEG file, a AVI file, a MOV file, a JPEG file, a GIF file, a PNG file,a DOC file, or a PDF file.
 8. The method of claim 1, wherein tagging thecontent item comprises associating system-defined tag information withthe content item.
 9. The method of claim 7, wherein system-defined taginformation identifies a content item as an audio file, a video file, animage file, or a formatted text document.
 10. The method of claim 1,wherein storing the content-identifying information and tag informationcomprises storing a bookmark in a database.
 11. A method comprising:receiving a command to search for bookmarked content items havingspecific tag information associated with the content items; querying adatabase of bookmarked content items for bookmarks having the specifictag information; and retrieving the bookmarks.
 12. The method of claim11, wherein receiving a command to search for bookmarked content itemscomprises receiving tag information from a user of a bookmarking andtagging service provider.
 13. The method of claim 12, wherein receivingtag information comprises receiving input from a user navigating to aspecific URL corresponding to a specific tag, receiving input from auser using a tag navigation control on a web page, or receiving inputfrom a user clicking on a hyperlink associated with a specific tag. 14.The method of claim 11, wherein receiving tag information comprisesreceiving tag information corresponding to a specific file type ofcontent items.
 15. The method of claim 14, wherein receiving taginformation corresponding to specific file types comprises receivingsystem-defined tag information corresponding to specific file types ofaudio files, video files, image files, or formatted text documents. 16.The method of claim 11, further comprising: displaying a list ofretrieved bookmarks along with interactive controls if the bookmarkedcontent items are audio files, video files, image files, or formattedtext documents.
 17. The method claim 16, further comprising: providing acontrol for generating a feed corresponding to a web page including aset of retrieved bookmarks.
 18. The method of claim 17, whereinproviding a control for generating a feed comprises providing a buttonor hyperlink on a web page to generate an RSS file or an Atom file.